INDIANAPOLIS -- Scott Dixon turned in the fastest Thursday lap in practice for the Indianapolis 500.
The 2008 Indy 500 winner and two-time series champ went 223.088 mph -- the second-fastest speed of the week.
Those speeds are expected to jump by 4-5 mph when practice resumes Friday and IndyCar officials give the engines more power over the three-day qualifying weekend.
Again, the two Lotus cars struggled. France's Jean Alesi turned a fast lap of 207.489, while Switzerland's Simona de Silvestro's best lap was 205.690.